Jeff Mixon zaventh

How I built grandma.chat — a Next.js + AI Gateway chat app — with layered abuse defense, dual in-memory/Mongo backends, and a daily spend circuit-breaker.

A weekend that turned into a project: a clean-room software reimplementation of the Security+ and Security+ 2.0 garage-door rolling-code systems, framed as an RF reverse-engineering exercise.

A multi-year research line bridging four ML password-modeling papers — PassGAN, IWGAN, GNPassGAN, PassGPT — into operational cracking workflows, with a hashcat rule generator (pantagrule) on the operational side and Hashtopolis on the distributed-cracking side.

Why the WPA passphrase printed on the bottom of so many ISP-supplied routers isn’t actually random — a pattern, an abstract methodology, and why this kind of research matters for the defender side.